
zl = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73]

sum = 0
ji = 1
for a in zl:
    ji *= a
    sum += ji
    if sum >= 0xFFFFFFFFFFFFFFFF:
        print(a)
        break

print(sum)